feat(docs): replace lua2dox.lua

Problem:

The documentation flow (`gen_vimdoc.py`) has several issues:
- it's not very versatile
- depends on doxygen
- doesn't work well with Lua code as it requires an awkward filter script to convert it into pseudo-C.
- The intermediate XML files and filters makes it too much like a rube goldberg machine.

Solution:

Re-implement the flow using Lua, LPEG and treesitter.

- `gen_vimdoc.py` is now replaced with `gen_vimdoc.lua` and replicates a portion of the logic.
- `lua2dox.lua` is gone!
- No more XML files.
- Doxygen is now longer used and instead we now use:
  - LPEG for comment parsing (see `scripts/luacats_grammar.lua` and `scripts/cdoc_grammar.lua`).
  - LPEG for C parsing (see `scripts/cdoc_parser.lua`)
  - Lua patterns for Lua parsing (see `scripts/luacats_parser.lua`).
  - Treesitter for Markdown parsing (see `scripts/text_utils.lua`).
- The generated `runtime/doc/*.mpack` files have been removed.
   - `scripts/gen_eval_files.lua` now instead uses `scripts/cdoc_parser.lua` directly.
- Text wrapping is implemented in `scripts/text_utils.lua` and appears to produce more consistent results (the main contributer to the diff of this change).

1 files changed, 1 insertions, 0 deletions

diff --git a/src/nvim/api/window.c b/src/nvim/api/window.c
index c41c5d4b07..ed51eedf1b 100644
--- a/src/nvim/api/window.c
+++ b/src/nvim/api/window.c
@@ -452,6 +452,7 @@ Object nvim_win_call(Window window, LuaRef fun, Error *err)
 ///
 /// This takes precedence over the 'winhighlight' option.
 ///
+/// @param window
 /// @param ns_id the namespace to use
 /// @param[out] err Error details, if any
 void nvim_win_set_hl_ns(Window window, Integer ns_id, Error *err)